<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        //座机号码验证：全国座机号码 两种格式：012-12345678或者 0530-1234567
        //正则里面的或者符号|
        var reg = /^\d{3}-\d{8}| \d{4}-\d{7}$/  //相当于下面这种写法
        var reg1 = /^\d{3,4}-\d{7,8}$/
    </script>
</body>

</html>